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How to sharing lib between different projects

rusheng wu

Hi all,

First I want to deliver some background information to the given problem:There are two different MDK projects, both of which need to be written into the same chip to run at different times. Since both projects use the same library, the final flash will contain two identical binary data segments of the library. Is there any way for these two projects to use the same library binary data?

My approach is to set the same addresses for the Execution Region and Load Region of the same library in the scatter files of both projects, so that only one set of library binaries is needed during code burning. However, things did not go as planned because they are not linked in a fixed order.

Project 1:

scatter file

.map

Project 2:

scatter file

.map:

This approach reveals that the addresses of the third object are different.

I am wondering if it is necessary to specify the order of objects in the scatter file? So I tried to use armar -t to extract the .o files included in the lib and write them in order to the Execution Region, but after compiling and checking the address distribution in the .map file, it still did not follow the order specified in the scatter file.

scatter file

.map

How can I make the linker arrange the image in order?
Returning to the fundamental question, how can I implement different MDK projects to share the binary code of the lib?
Thanks!
 
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